Yesterday I did an activity for a group of toddlers which involved blowing through a straw into a tray of soapy water, to make bubbles. The group was aged between 1 and 4. Each child that tried it was supervised by their parent and me, and I asked them all "Can you blow through a straw?" and "Don't suck, will you, it's not for drinking?"
Every single child that tried it, except my ds, sucked and got a mouthful of fairy liquid. One boy vomited and had to go home.
I had tested it at home on ds (2.9), who, obviously, was misleadingly gifted at straw blowing. I wasn't expecting the younger ones to manage it, but it was up to their parents to decide whether they were old enough to have a go (there were lots of other activities on offer). I am sure I have done this before at a nursery with 3 year olds. Where did I go wrong, and would you be cross if it was your child who got a mouthful?